%numeric solver不会尽力去找等式的全部numeric solution,它仅仅返回它找到的第一个解。 clc,clear syms x solve(sin(x)==x^2-1,x) %验证上面的等式确实有一个正值解:画出等式的左右两部分的曲线 ezplot(sin(x),-2,2) hold on ezplot(x^2-1,-2,2) hold off %也可以直接用函数vpasolve求出数值解(...
（是MATLAB doc solve的全部翻译，将常用部分标注彩色）语法 S = solve(eqn,var)example S = solve(eqn,var,Name,Value)example Y = solve(eqns,vars)Y = solve(eqns,vars,Name,Value)example [y1,...,yN] = solve(eqns,vars)example [y1,...,yN] = solve(eqns,vars,Name,Value)[y1,...,yN,pa...
Solve Multivariate Equations and Assign Outputs to Variables Use Parameters and Conditions to Refine Solution Shorten Result with Simplification Rules Ignore Assumptions on Variables Solve Polynomial Equations of High Degree Return One Solution 另请参阅 dsolve, isolate, linsolve, root, subs, symvar, vpas...
%numeric solver不会尽力去找等式的全部numeric solution,它仅仅返回它找到的第一个解。 clc,clear syms x solve(sin(x)==x^2-1,x) %验证上面的等式确实有一个正值解:画出等式的左右两部分的曲线 ezplot(sin(x),-2,2) hold on ezplot(x^2-1,-2,2) hold off %也可以直接用函数vpasolve求出数值解(...
Open in MATLAB Online Im trying to get the real and the imaginary part of this function. symsz complex g(z)=exp(z)+sin(z) solve(exp(z)+sin(z)==0) 0 Comments Sign in to comment. Answers (1) Reshma Nerellaon 10 Dec 2021
如果想获得方程全部的根,则可以考虑调用vpasolve()函数直接求解。下面将给出例子演示Riccati方程与多项式矩阵方程的方法。 例2-17 试求解下面的Riccati代数方程。 解 可以先输入这几个矩阵,然后调用控制系统工具箱中的are()函数求解Riccati方程,并计算得出的误差矩阵范数。 由控制系统工具箱的are()函数可以直接得出方程...
>>syms b; >> syms a; >> [a,b]=vpasolve('6.42*(2*a+b)=2','10.76*(16*a+b)=16'); 未定义与 'char' 类型的输入参数相对应的函数 'vpasolve'。 具体说说那里错了呗? 来自matlab吧 吉光片羽🌀 lhmhz07-01 0 怎么将matlab solve函数多解组成数组 怎么将matlab solve函数多解组成数组 ...
So it appears there are 4 solutions found by vpasolve. ALL of them were complex. And that explains why fsolve failed to find a solution. fsolve looks for real solutions. (You can make it search for complex solutions, with some additional effort.) ...
If yes, I highly doubt that an analytical solution exists for a system of 8 non-linear equations. You will have to try to find numerical solution. In that case, try to usevpasolveorfsolve(requires Optimzation toolbox) Sign in to comment. ...
I think you can't find symbolical expression/solution for this equation. It's too complicated Define all known constants/variables and use numerical approach (vpasolveorfsolve) 2 Comments John D'Erricoon 25 Jun 2020 +1. You can almost prove it will be too complicated to solve. That is, do...